Timeline for Solving a quadratic equation for an hermitian matrix
Current License: CC BY-SA 3.0
3 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Jun 24, 2014 at 14:28 | comment | added | Per Alexandersson | Yes, see my comment in the end... i misread the question.. | |
| Jun 24, 2014 at 12:51 | comment | added | Robert Bryant | It is not true that the eigenvalues of $S$ have to be nonnegative and real, even in the case $n=2$. As shown in my answer, $S=-I_2$ has solutions, in fact, a $1$-parameter family of them. | |
| Dec 23, 2013 at 21:14 | history | answered | Per Alexandersson | CC BY-SA 3.0 |